Document SpeechRecognizer errors

[jonathanpeppers]

Summary

• Documented the SpeechRecognizerError managed error projection and its remaining common error values.
• Removed legacy extraction metadata from the same XML file so scoped validation can enforce documentation hygiene.

Sources

• https://android.googlesource.com/platform/frameworks/base/+/refs/heads/main/core/java/android/speech/SpeechRecognizer.java
• https://developer.android.com/reference/android/speech/SpeechRecognizer#ERROR_CANNOT_CHECK_SUPPORT
• https://developer.android.com/reference/android/speech/SpeechRecognizer#ERROR_CANNOT_LISTEN_TO_DOWNLOAD_EVENTS
• https://developer.android.com/reference/android/speech/SpeechRecognizer#ERROR_INSUFFICIENT_PERMISSIONS
• https://developer.android.com/reference/android/speech/SpeechRecognizer#ERROR_LANGUAGE_NOT_SUPPORTED
• https://developer.android.com/reference/android/speech/SpeechRecognizer#ERROR_LANGUAGE_UNAVAILABLE
• https://developer.android.com/reference/android/speech/SpeechRecognizer#ERROR_SERVER_DISCONNECTED
• https://developer.android.com/reference/android/speech/SpeechRecognizer#ERROR_SPEECH_TIMEOUT
• https://developer.android.com/reference/android/speech/SpeechRecognizer#ERROR_TOO_MANY_REQUESTS

Validation

• python tools\regenerate_android_app_docs.py --validate docs\xml\Android.Speech\SpeechRecognizerError.xml
• XML parse, CRLF-only line endings, scoped-placeholder, and diff-scope checks
• git diff --check

Refs #226

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[jonathanpeppers]

@dalexsoto review

[dalexsoto]

The SpeechRecognizer error values, API-level projections, managed metadata, and generated documentation match Android.